Add username to terms message in git and API calls

This will make it clearer to users which account is being used to make
the API/git call. So they know which account needs to be used to
accept the terms.

Closes #46649

changelogs/unreleased/bvl-add-username-to-terms-message.yml

+---
+title: Add username to terms message in git and API calls
+merge_request: 19126
+author:
+type: changed

lib/gitlab/auth/user_access_denied_reason.rb

@@ -8,12 +8,12 @@ module Gitlab
       def rejection_message
         case rejection_type
         when :internal
-          'This action cannot be performed by internal users'
+          "This action cannot be performed by internal users"
         when :terms_not_accepted
-          'You must accept the Terms of Service in order to perform this action. '\
-          'Please access GitLab from a web browser to accept these terms.'
+          "You (#{@user.to_reference}) must accept the Terms of Service in order to perform this action. "\
+          "Please access GitLab from a web browser to accept these terms."
         else
-          'Your account has been blocked.'
+          "Your account has been blocked."
         end
       end
 

spec/lib/gitlab/auth/user_access_denied_reason_spec.rb

@@ -22,7 +22,8 @@ describe Gitlab::Auth::UserAccessDeniedReason do
         enforce_terms
       end
 
-      it { is_expected.to match /You must accept the Terms of Service/ }
+      it { is_expected.to match /must accept the Terms of Service/ }
+      it { is_expected.to include(user.username) }
     end
 
     context 'when the user is internal' do

spec/lib/gitlab/git_access_spec.rb

@@ -1055,7 +1055,7 @@ describe Gitlab::GitAccess do
 
       it 'blocks access when the user did not accept terms', :aggregate_failures do
         actions.each do |action|
-          expect { action.call }.to raise_unauthorized(/You must accept the Terms of Service in order to perform this action/)
+          expect { action.call }.to raise_unauthorized(/must accept the Terms of Service in order to perform this action/)
         end
       end
 

spec/requests/api/helpers_spec.rb

@@ -171,7 +171,7 @@ describe API::Helpers do
         end
 
         it 'returns a 403 when a user has not accepted the terms' do
-          expect { current_user }.to raise_error /You must accept the Terms of Service/
+          expect { current_user }.to raise_error /must accept the Terms of Service/
         end
 
         it 'sets the current user when the user accepted the terms' do